01213nas a2200109 4500008004100000245005600041210005600097260003500153520081000188100002700998856007801025 2011 eng d00aValidation of variable resolution BSDFs in Radiance0 aValidation of variable resolution BSDFs in Radiance bBartenbach L-chtLaborc11/20113 a

In this document results of the validation of the "Variable Resolution BSDF" approach as presented at the 10th International Radiance Workshop (G.Ward, A.McNeil, "A Variable-resolution BSDF Implementation") are presented.

Variable-resolution BSDFs are generated with genBSDF for the RADIANCE native materials plastic, trans, and glass (isotropic) and plastic2 and trans2 (anisotropic). Both, the maximum resolution (1024 x 1024 patches or 4096 x 4096 patches) as well as the number of specular samples (16 or 64) are varied.

The resulting data is reduced with rttree_reduce at various degrees (0%, i.e. no reduction, 95%, i.e. reduction by approximately 95%, and 99%, i.e. only about 1% of data left).

1 aGeisler-Moroder, David uhttps://facades.lbl.gov/publications/validation-variable-resolution-bsdfs